- Grenier, M. (Charles), 1808-1875
- Grenot, Claude
- Grenside, F. C.
- Grensted, L. W.
- Grentzenberg, M.
- Grenzebach, Myrle
- Greppi, Emanuele
- Greppi, Julian
- Grergory, Jeren J.
- Greš, Stanislav
- Grès, Virginie
- Gresham College.
- Gresham Nurseries.
- Gresham, A. B.
- Gresham, Belinda
- Gresham, Burt
- Gresham's Nursery,
- Greshoff, M. 1862-1909
- Greslebin, A
- Greslebin, A G
- Greslebin, Alina G
- Gress, Ernest Milton 1876-1968
- Gress, Franklin
- Gressani, Alessia
- Gresse, Hugo
- Gresser, Edward B
- Gressitt, J. Linsley
- Gressler, Daniel T.
- Gressler, Eliana
- Gressler, Luciane T.
- Gressler, Pablo
- Gressner, Heinrich
- Gresswell, Albert
- Gresswell, Charles.
- Gresswell, Dan Astley 1853-1904
- Gresswell, George, 1858-1914
- Gresswell, James Brodie.
- Gresswell, Robert E.
- Gretchina, Alexandre
- Greth, Arnaud
- Grether & Son.
- Grether Gonzalez, Rosaura
- Grether, Gregory F
- Grêt-Regamey, Adrienne
- Gretton, Adam
- Greulach, Victor A
- Greuter, Johann Friedrich, 1590-1662
- Greuter, Mark Walter, 1930-2017
- Greuter, Mathieu, 1564?-1638
- Greuter, Werner
- Grevé, Carl
- Greve, Caroline
- Greve, John H
- Greve, Karl, 1854-
- Greve, Lita
- Grève, Pierre
- Greve, W., lithographer.
- Greve-Jensen, Lita
- Greven, Hartmut
- Grever, Michael R
- Greville, Robert Kaye, 1794-1866
- Grévin, Jacques, 1538?-1570
- Grew, David.
- Grew, Edward W.
- Grew, Edwin Sharpe, 1867-
- Grew, Joseph Clark.
- Grew, Nehemiah, 1641-1712
- Grewal, G S
- Grewal, Jasjit Singh 1951-
- Grewe, Felix
- Grewell, Brenda
- Grewell, Brenda J.
- Grey of Fallodon, Edward Grey, Viscount, 1862-1933
- Grey Owl, 1888-1938
- Grey, Alexandra
- Grey, Darryl L.
- Grey, E C
- Grey, Earl
- Grey, Ed
- Grey, Edwin.
- Grey, Erin K.
- Grey, Jonathan
- Grey, Kayla
- Grey, Lionel Paul
- Grey, M.
- Grey, Marion
- Grey, Merilyn J
- Grey, Pat
- Grey, Robert
- Grey, Thomas J. & Co.
- Grey, W.
- Grey, Zane, 1872-1939
- Greyes, Natch
- Greyvenstein, Bianca
- Grez, A A
- Grez, Audrey A.
- Grez, Daniel Barros
- Grez, Vicente
- Grgurinovic, Cheryl Anne 1958-
- Gribben, Paul E.
- Gribbins, Kevin M.
- Gribble Nurseries.
- Gribble, James.
- Gribble, Neil A.
- Gribel, Rogério
- Gribelin, Simon, 1661 or 1662-1733
- Gribodo, Giovanni
- Grice, George D.
- Grichanov, Igor
- Grichanov, Igor Y.
- Grichanov, Igor Ya
- Gridelli, Edoardo 1895-1958
- Gridley, Kate.
- Grieb, Jonas
- Grieb, Richard, 1868-
- Griebel, Julius
- Griebeler, Ana Gláucia
- Griebenow, Zachary
- Griebler, Christian
- Grieg, James A. (James Alexandersøn), 1861-1936
- Griego, Ella
- Griem, Karl.
- Grier Brothers.
- Grier, Charles C
- Grier, Douglas A.
- Grier, Harry J.
- Grier, James W.
- Grier, Joyce C.
- Grier, Norman McDowell 1890-1951
- Grier, Thomas Graham, 1865-
- Grierson, George Abraham
- Grierson, James D.
- Grierson, P. H.
- Gries, Corinna
- Gries, Gerhard
- Gries, John M.
- Gries, R
- Gries, Regine
- Griesa Nurseries.
- Griesa, A. G.
- Griesa, A. H.
- Griesa, A.H.
- Griesa, T. E.
- Griesbach, Carl Ludolph, 1847-1907
- Griesbach, Hermann Adolf (Adolph)
- Griesbaum , Frederic
- Griesel, Welsey O.
- Griesemer, J. W.
- Griesemer, Sara J.
- Griesheim, Adolf von.
- Grieshuber, Josef
- Griesinger, Wilhelm
- Griesselich, Ludwig, 1804-1848
- Griessen, F
- Griessinger, Jean-Michel
- Grieve, Andrew
- Grieve, Brian John 1907-1997
- Grieve, Evelyn George
- Grieve, Maude (Sophia Emma Magdalene Law), 1858-1941
- Grieve, Symington
- Grieves, Leanne A.
- Griffa, Sabrina
- Griffin, A R
- Griffin, Achille
- Griffin, B. J.
- Griffin, Curtice R
- Griffin, D K
- Griffin, Dana III
- Griffin, David Michael 1929-
- Griffin, Delia Isabel, 1868-1949
- Griffin, Dennis
- Griffin, Desmond John Gerald
- Griffin, Donald R. (Donald Redfield), 1915-
- Griffin, Donald R. (Donald Redfield), 1915-2003
- Griffin, Edward Arnold
- Griffin, Edward Lawrence, 1889-
- Griffin, Emily
- Griffin, Eryn
- Griffin, Frederick J.
- Griffin, G F
- Griffin, Gerald, 1803-1840
- Griffin, Graham
- Griffin, Jack G., 1920-
- Griffin, Jack G., 1970-
- Griffin, James R.
- Griffin, Jason J.
- Griffin, Jasper
- Griffin, John
- Griffin, K
- Griffin, Kathleen A.
- Griffin, L. T. (Louis Thomas)
- Griffin, Lawrence Edmonds, 1874-1949
- Griffin, Margaret,
- Griffin, Mary M.,
- Griffin, Melissa J.
- Griffin, Miguel
- Griffin, O. B.
- Griffin, Owen M.
- Griffin, Pamela
- Griffin, Paul Adolph.
- Griffin, Philip
- Griffin, Rowland K.
- Griffin, Sandra L.
- Griffin, William L
- Griffin, William, fl 1758-1776
- Griffing & Bradley.
- Griffing & Co.
- Griffing Bros. Co.
- Griffing Brothers (Port Arthur, Tex.)
- Griffing Brothers Co.
- Griffing Brothers Company.
- Griffing Brothers.
- Griffing Landscape Company.
- Griffing Nurseries.
- Griffing, J. S.
- Griffing, W. C.
- Griffing, W. D.
- Griffing's Delta Nurseries.
- Griffing's Grand Bay Nurseries.
- Griffing's Nurseries.
- Griffing's Semi-Tropic Nurseries.
- Griffini, Achille
- Griffini, Miguel
- Griffin's Pansy Gardens.
- Griffith and Turner Company.
- Griffith, A. F.
- Griffith, A. L.,
- Griffith, D
- Griffith, Daniel M.
- Griffith, Donee
- Griffith, Douglas M.
- Griffith, Edgardo J.
- Griffith, Edward, 1790-1858
- Griffith, Eugene,
- Griffith, F. (Frederick), 1879-1941
- Griffith, Fleda
- Griffith, Frederic Richardson,
- Griffith, Gareth
- Griffith, Gareth W.
- Griffith, George W
- Griffith, Gwyn
- Griffith, Heather M
- Griffith, Horace
- Griffith, Hugh
- Griffith, J S
- Griffith, J. E. (Joanna Elizabeth)
- Griffith, J. E. (Ornithologist)
- Griffith, J. P. Crozer (John Price Crozer), 1856-1941
- Griffith, J. W. (John William)
- Griffith, James L